Foods to Fight the Blues
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2. Salmon

Omega-3 fatty acids help our brain cells communicate and enhance the concentration of dopamine and serotonin—two neurotransmitters that help regulate mood. Seafood, such as salmon and sardines, is high in omega-3s, as are walnuts and ground flaxseed. In one study, researchers found that participants who had lower blood levels of omega-3 fatty acids were more likely to report mild or moderate symptoms of depression.